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Cisco Nexus 7000 Design Manual page 52

On flexpod with cisco nexus 7000 using fcoe
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FlexPod Implementation and Design
In FlexPod with Data ONTAP 7-mode, storage controllers do not require the cluster interconnect
Note
switches.
The NetApp FAS controllers use redundant 10GbE converged adapters configured in a two-port interface
group (ifgrp). Each port of the ifgrp is connected to one of the upstream switches, allowing multiple
active paths by utilizing the Cisco Nexus vPC feature. Interface group is a mechanism that allows the
aggregation of a network interface into one logical unit. Combining links aids in network availability
and bandwidth. NetApp provides three types of interface groups for network port aggregation and
redundancy:
Single mode
Static multimode
Dynamic multimode
It is recommended to use dynamic multimode interface groups because of its increased reliability and
error reporting feature and also because it is compatible with Cisco Virtual Port Channels. A dynamic
multimode interface group uses Link Aggregation Control Protocol (LACP) to group multiple interfaces
together to act as a single logical link. This provides intelligent communication between the storage
controller and Cisco Nexus switches, and enables load balancing across physical interfaces as well as
failover capabilities.
From a Fibre Channel perspective, the SAN A (red in
isolation is maintained across the architecture with dedicated FCoE channels and virtual interfaces. The
7-Mode design allocates Fibre Channel interfaces with SAN A and SAN B access for each controller in
the HA pair.
VMware vSphere 5.1 on FlexPod with Nexus 7000 Using FCoE
52
Figure
23) and SAN B (blue in
Figure
23) fabric

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